research-article

Efficient elasticity for character skinning with contact and collisions

Authors:

Rasmus Tamstorf,

Eftychios SifakisAuthors Info & Claims

SIGGRAPH '11: ACM SIGGRAPH 2011 papers

Article No.: 37, Pages 1 - 12

https://doi.org/10.1145/1964921.1964932

Published: 25 July 2011 Publication History

Abstract

We present a new algorithm for near-interactive simulation of skeleton driven, high resolution elasticity models. Our methodology is used for soft tissue deformation in character animation. The algorithm is based on a novel discretization of corotational elasticity over a hexahedral lattice. Within this framework we enforce positive definiteness of the stiffness matrix to allow efficient quasistatics and dynamics. In addition, we present a multigrid method that converges with very high efficiency. Our design targets performance through parallelism using a fully vectorized and branch-free SVD algorithm as well as a stable one-point quadrature scheme. Since body collisions, self collisions and soft-constraints are necessary for real-world examples, we present a simple framework for enforcing them. The whole approach is demonstrated in an end-to-end production-level character skinning system.

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Cited By

Du YLi YCoros SThomaszewski BKry PCani MSkouras MWang H(2024)Robust and Artefact-Free Deformable Contact with Smooth Surface RepresentationsProceedings of the ACM SIGGRAPH/Eurographics Symposium on Computer Animation10.1111/cgf.15187(1-13)Online publication date: 21-Aug-2024
https://dl.acm.org/doi/10.1111/cgf.15187
Chen RCui JLi SHao A(2024)A Coupling Physics Model for Real-Time 4D Simulation of Cardiac ElectromechanicsComputer-Aided Design10.1016/j.cad.2024.103747175(103747)Online publication date: Oct-2024
https://doi.org/10.1016/j.cad.2024.103747
Chen HWu RGrinspun EZheng CChen PKrause ABrunskill ECho KEngelhardt BSabato SScarlett J(2023)Implicit neural spatial representations for time-dependent PDEsProceedings of the 40th International Conference on Machine Learning10.5555/3618408.3618610(5162-5177)Online publication date: 23-Jul-2023
https://dl.acm.org/doi/10.5555/3618408.3618610
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Index Terms

Efficient elasticity for character skinning with contact and collisions
1. Computing methodologies
  1. Modeling and simulation
    1. Simulation types and techniques
      1. Simulation by animation

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cover image ACM Conferences

SIGGRAPH '11: ACM SIGGRAPH 2011 papers

August 2011

869 pages

ISBN:9781450309431

DOI:10.1145/1964921

Editor:
Hugues Hoppe

Copyright © 2011 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Published: 25 July 2011

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SIGGRAPH '11: Special Interest Group on Computer Graphics and Interactive Techniques Conference

August 7 - 11, 2011

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SIGGRAPH '11 Paper Acceptance Rate 82 of 432 submissions, 19%;

Overall Acceptance Rate 1,822 of 8,601 submissions, 21%

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Cited By

Du YLi YCoros SThomaszewski BKry PCani MSkouras MWang H(2024)Robust and Artefact-Free Deformable Contact with Smooth Surface RepresentationsProceedings of the ACM SIGGRAPH/Eurographics Symposium on Computer Animation10.1111/cgf.15187(1-13)Online publication date: 21-Aug-2024
https://dl.acm.org/doi/10.1111/cgf.15187
Chen RCui JLi SHao A(2024)A Coupling Physics Model for Real-Time 4D Simulation of Cardiac ElectromechanicsComputer-Aided Design10.1016/j.cad.2024.103747175(103747)Online publication date: Oct-2024
https://doi.org/10.1016/j.cad.2024.103747
Chen HWu RGrinspun EZheng CChen PKrause ABrunskill ECho KEngelhardt BSabato SScarlett J(2023)Implicit neural spatial representations for time-dependent PDEsProceedings of the 40th International Conference on Machine Learning10.5555/3618408.3618610(5162-5177)Online publication date: 23-Jul-2023
https://dl.acm.org/doi/10.5555/3618408.3618610
Shi AKim T(2023)A Unified Analysis of Penalty-Based Collision EnergiesProceedings of the ACM on Computer Graphics and Interactive Techniques10.1145/36069346:3(1-19)Online publication date: 24-Aug-2023
https://dl.acm.org/doi/10.1145/3606934
Wu YUmetani N(2023)Two-Way Coupling of Skinning Transformations and Position Based DynamicsProceedings of the ACM on Computer Graphics and Interactive Techniques10.1145/36069306:3(1-18)Online publication date: 24-Aug-2023
https://dl.acm.org/doi/10.1145/3606930
Lee SJiang YLiu C(2023)Anatomically Detailed Simulation of Human TorsoACM Transactions on Graphics10.1145/359242542:4(1-11)Online publication date: 26-Jul-2023
https://dl.acm.org/doi/10.1145/3592425
Benchekroun OZhang JChaudhuri SGrinspun EZhou YJacobson A(2023)Fast Complementary Dynamics via Skinning EigenmodesACM Transactions on Graphics10.1145/359240442:4(1-21)Online publication date: 26-Jul-2023
https://dl.acm.org/doi/10.1145/3592404
Chen HDiaz EYuksel C(2023)Shortest Path to Boundary for Self-Intersecting MeshesACM Transactions on Graphics10.1145/359213642:4(1-15)Online publication date: 26-Jul-2023
https://dl.acm.org/doi/10.1145/3592136
Han XMasterjohn JCastro A(2023)A Convex Formulation of Frictional Contact Between Rigid and Deformable BodiesIEEE Robotics and Automation Letters10.1109/LRA.2023.33045438:10(6219-6226)Online publication date: Oct-2023
https://doi.org/10.1109/LRA.2023.3304543
Zhang DZhai XLiu LFu X(2023)An optimized, easy-to-use, open-source GPU solver for large-scale inverse homogenization problemsStructural and Multidisciplinary Optimization10.1007/s00158-023-03657-y66:9Online publication date: 9-Sep-2023
https://dl.acm.org/doi/10.1007/s00158-023-03657-y
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